Não informado. Reports of the Research Institute for Strength and Fracture of Materials. Tohoku University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Reports of the Research Institute for Strength and Fracture of Materials. Sendai, Japão: Tohoku University.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Reports of the Research Institute for Strength and Fracture of Materials. Tohoku University.
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